<?php

namespace App\Controller\Administrative\System\StaffingRule;

use App\Service\Assignment\StaffingConfigurationException;
use App\Service\Export\StaffingPreviewExporter;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;
use Psr\Log\LoggerInterface;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\HeaderUtils;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\StreamedResponse;
use Symfony\Component\Routing\Attribute\Route;
use Symfony\Component\Security\Http\Attribute\IsGranted;

class ExportController extends AbstractController
{
    public function __construct(
        private readonly StaffingPreviewExporter $previewExporter,
        private readonly LoggerInterface $logger,
    ) {
    }

    #[Route('/administrative/system/staffing-rule/export', name: 'app_administrative_system_staffing_rule_export')]
    #[IsGranted('ROLE_ADMINISTRATIVE')]
    public function index(): Response
    {
        try {
            $rows = $this->previewExporter->rows();
        } catch (StaffingConfigurationException $e) {
            $this->addFlash('error', 'Ein Jobprofil oder Honorar der Besetzungsmatrix ist nicht (mehr) vorhanden: '.$e->getMessage());

            return $this->redirectToRoute('app_administrative_system_staffing_rule_index');
        }

        if ([] === $rows) {
            $this->addFlash('error', 'Keine Daten für den Export vorhanden');

            return $this->redirectToRoute('app_administrative_system_staffing_rule_preview');
        }

        $spreadsheet = $this->previewExporter->export($rows);
        $filename = sprintf('besetzungsmatrix-vorschau_%s.xlsx', date('YmdHi'));

        $response = new StreamedResponse(static function () use ($spreadsheet): void {
            (new Xlsx($spreadsheet))->save('php://output');
        });

        $response->headers->set(
            'Content-Type',
            'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
        );
        $response->headers->set(
            'Content-Disposition',
            HeaderUtils::makeDisposition(HeaderUtils::DISPOSITION_ATTACHMENT, $filename, md5($filename))
        );

        $this->logger->info('Export staffing preview', [
            'count' => count($rows),
        ]);

        return $response;
    }
}